[rdiddly]

I'm not saying dictionary.com is the be-all and end-all of dictionaries, but their definition of error uses the word mistake several times. https://www.dictionary.com/browse/error

Likewise their definition of mistake uses error a couple of times. https://www.dictionary.com/browse/mistake

I get it though, there is a subtle difference. I'm just saying both terms mischaracterize (intentionally) what I think was likely a very intentional, knowing and calculated action by Twitter. I'm asserting without proof that there was no inattention as in your first example, and no miscalculation as in your second example.

The baseball example is problematic because "error" has a game-specific meaning just like "run" and "base," and whether you commit a mistake or an error, they will both be recorded as errors.